I'm not a zoomer, I was born in the 90's but you've referenced the exact system I've seen and I went from mildly left wing and a-political on social issues when I first started, as I went into my teens I became more and more Libertarian until now I'm just an outright Voluntaryist and would happily see the whole education system burn for what they've done to children because these companies are only implementing these policies as a direct result of university and school indoctrination creating a mob of deluded tantrum throwers who screech when they can't be racist towards white people and attack others for thinking differently. I can completely understand though in this situation why somebody would become a legitimate racist towards ethnic minorities, it's just not the correct conclusion and an incredibly uneducated peasant way of looking at things which is why I mock the nazi larpers for falling into the trap of leftists. The racial identity politics is exactly what the left wants, because it means they get their race war and can stay in power using ethnic voting blocs for years to come, how do I know this? I live in one of the most left wing areas of my country and I know exactly how the left gets their votes. I think even a lot of Trump supporters and general anti-woke types are in denial about these tactics and don't know how the game is played so they incorrectly point towards anything else. It will take 5 - 10 years, but I will be having a huge amount of fun fucking with all these people now I have taken appropriate steps to protect myself from the left's bullshit mob tactics and doxxing. I'll write it again as a tldr, racial identitarians and nazi larpers are a bunch of stupid peasants who have fallen for the racial politics ploy by the left. They want you hating all ethnic minorities so they can scapegoat you as the evil 'alt-right' and 'white supremacists' and tell people to vote for them in order to get rid of you, what a convenient boogeyman they've created. Thankfully they're so small in number they're pretty meaningless even with the constant fear mongering in the media so people just laugh.

If you're watching on desktop, there are browser extensions like Unwanted Twitch that allow you to block unwanted categories, streamers, etc.

you're assuming Twitch will add the "white" or "straight" tags. They probably won't. They'll probably only have tags for minorities, and and you'll only be allowed to search _for_ those tags, not exclude them (though somebody can always make an extension that excludes them)